Account in Win 10 listed as unknown account everywhere but libraries

So I have a kinda weird one that I cannot wrap my head around. I'll try to be as clear as possible...

I am the administrator of my home PC, and I am using a Microsoft account instead of a local account. When I look at the properties of my libraries, under the security tab, my account is clearly listed as someone who has access to these files.

When I look at the properties of anything outside of libraries, My account is listed as Account Unknown (insertstringofnumbershere). Trying to add my otherwise clearly listed name and account results in the name not found dialog box. I have tried adding myself by email and by account name, and neither work.

I feel like this also has something to do with my Linux laptop not being able to connect to anything shared.

Let me know if you have ANY ideas or questions. I've not tried much in the way of fixes because I have no idea whats going on.

No idea what went on, but after contacting MS support, they advised me to try adding myself in Effective permissions ( Properties -> security tab -> advanced -> effective permissions ) When I added myself there, it magically worked.
Don't know what the problem was, but it's fixed now.